JPH04191184A - How to assemble the front components of the car body - Google Patents

Abstract

PURPOSE:To enhance the workability of setting a workpiece by setting and welding a member onto a jig so that front wheel houses are horizontally postured, by changing them so that they are vertically postured, and by setting them to a front component jig. CONSTITUTION:A side frame and a damper housing which constitute left and right front wheel houses W1, W1 are set on a front wheel house set jig 7 in a horizontal posture. After they are temporarily welded in a first assembly station 1, the left and right wheel houses W1, W1 are shifted from the set jig 7 onto a fixing jig 10 and are additionally welded. These are delivered to a transfer jig 25 on a transfer means 21 by way of a pay-out jig 8 while their horizontal posture is maintained, and are accordingly transferred to a second assembly station 2 while the transfer jig 25 is inverted so that the left and right front wheel houses W1, W1 are turned into a vertical posture. Then, they are set on a front component set jig 26 provided at the second assembly station 2 so that they are aligned widthwise of the vehicle.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of assembling a front component of a vehicle body by integrating a pair of left and right front wheel houses, a bulkhead, and a dash board.

(Prior Art) Conventionally, as a method for assembling front components, according to Japanese Patent Application Laid-open No. 1-237082, the respective members constituting the left and right front wheel houses are arranged side by side with both wheel houses in a vertical position at equal intervals to the completed vehicle body. After assembling the left and right front wheel houses as a pair by welding and joining these parts, both wheel houses are transferred and set on a setting jig while maintaining the above-mentioned distance,
It is known that a bulkhead and a dash board are set in a desired positional relationship in both wheel houses on a setting jig and then welded together.

(Problem to be Solved by the Invention) The above method has the advantage of being able to transport and set the left and right front wheel houses on a setting jig using a single transport means. It is necessary to set the constituent members in a vertical position on a wheel house setting jig, and here the wheel house is assembled into a lower side frame WI# and an upper damper housing W1. It consists of
The damper housing Wlh has a large overhang on the outside, so if it is set in a vertical position on the side frame Wla, it will be uncomfortable to sit on, and the workability of setting the workpiece on the setting jig may be affected. .

In view of the above points, the present invention provides a method for assembling a front component in which the wheel house can be assembled by setting the constituent members of the wheel house in a horizontal position, thereby improving workpiece setting workability. Its purpose is to provide.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a method for assembling front components of a vehicle body by integrating a left and right front wheel house, a bulkhead, and a dash board. Set each member that makes up the front wheel house in a front wheel house setting jig so that each front wheel house is in a horizontal position, and then weld and connect these members to pair the left and right front wheel houses and set them horizontally. a step of assembling the assembled left and right front wheel houses in the same position, and a step of converting the assembled left and right front wheel houses from a horizontal position to a vertical position using a transfer means and setting them in a setting jig for front components while aligning the vehicle width direction; It consists of the steps of setting the bulkhead and dash board in the required positional relationship on the front wheel houses on the setting jig and welding them together.

(Function) Since the wheel house components are set in a horizontal position on the wheel house setting jig, the damper housing, which overhangs outward in a vertical position, can be stably set on the set jig, making it easier to set the workpiece. Improves workability.

Then, the components of the left and right front wheel houses set in the setting jig are welded together, and the left and right front wheel houses are assembled in a horizontal position. Since the posture is changed to a vertical position and set on the front component setting jig with the vehicle width direction aligned, the left and right front wheel houses can be set in a vertical position on the front wheel house setting jig, as in conventional technology. Even without assembly, both front wheel houses can be set in the required positional relationship on the front component setting jig, and the bulkhead and dash board can be welded and connected to both front wheel houses on the setting jig in the same manner as in the prior art. Then, the front components can be assembled.

(Example) FIG. 1 and FIG. 2 show a processing line for front components, and the processing line includes a front wheel house W
, a first assembly station 1 for assembling the front component W, a second assembly station 2 for assembling the front component W by welding together the front wheel house W1, bulkhead W2, and jet shim board W, and a front and rear assembly station 3 for performing expansion welding.
It includes multiple lighting stations 30, 32, and 33 in the tiers and a dispensing station 4 at the end.

A set station 1a and a transfer station 1b are provided before and after the first assembly station 1. A reciprocating payout cart 6 is provided between the station 1 and the transfer station 1b, and a set jig 7 for the front wheel house is mounted on the set cart 5, and a payout jig 8 is mounted on the payout cart 6.
Equipped with. Further, a fixing jig 10 is provided on the upper side of the first assembly station 1, and is suspended from a bracket 9a fixed to the machine frame 9, which is erected to surround the station 1. As shown in the figure, a pair of first welding robots 11.11 are positioned on the left and right sides of the robot, and a pair of left and right guide frames 12.12 are mounted on the ceiling of the machine frame 9 so as to be movable left and right. A pair of ceiling-mounted second welding robots 13 and 13 that can freely move back and forth are arranged.

Then, at the setting station 1a, the setting jig 7
, the respective members constituting the left and right front wheel houses W1, W, ie, the side frames W1. and damper housing W1. After setting, the setting cart 5 is moved to the first assembly station 1, and the front side frames W1. of each front wheel house W1 on the setting jig 7 are set.
and damper housing W3. The parts are temporarily attached by the first and second welding robots 11.13 on each side, and then these parts are transferred to the fixing jig 10, and multi-light welding is performed by the two welding robots 11.13. The front wheel house Wl is delivered to the dispensing jig 8 on the dispensing cart 6 which is moved back to the first assembly station 1, and is delivered to the transfer station 1b by the forward movement of the dispensing cart 6.

The setting jig 7 has an X-link mechanism 5 mounted on the setting cart 5.
It is supported by a cylinder 5b so that it can be raised and lowered freely via a cylinder 5b, and can be raised and lowered by a cylinder 5b using a pivot shaft 5c at the rear end as a fulcrum. Front wheel house W, , W, side frame W1. and damper housing W1. and the first assembly station 1.
At this point, the setting jig 7 is raised to transfer the workpiece to and from the fixing jig IO. Further, the dispensing jig 8 is provided on the dispensing cart 6 so as to be moved up and down by a cylinder 6a guided by guide bars eb, eb. Then, the jig 8 was made to receive the left and right front wheel houses W, , W,.

The details of the setting jig 7 are as shown in FIG.
A plurality of support members are provided to position and support the side frames W and a in a horizontal position.
As a supporting member for the site frame W as shown in the fifth figure
1. a workpiece receiver 14a that receives the front end a (rear end according to vehicle body standards) of the cylinder 1 from its lower surface to the outer surface;
a clamper 14c that is laterally opened and closed by a clamper 4b and clamps the front end a laterally between the clamper 14c and the workpiece receiver 14a;
As shown in the figure, a positioning pin 14 is attached to a movable frame 14f that is moved laterally by a cylinder 14d via a guide bar 14e so as to fit into a drain hole formed in the front end a.
g, and a side frame W1.g as shown in FIG. A workpiece receiver 15a that receives the rear end portion from its lower surface to the rear end surface, a clamper 15c that is opened and closed in the vertical direction by a cylinder L5b and clamps the rear end portion from above between the workpiece receiver 15a, and As shown in FIG. 4, a second support member 15 is provided, which is comprised of a positioning pin 15e that is moved laterally forward and backward from the cylinder 15d and is fitted into a drainage hole formed in the rear end. The positioning pin 14g has a built-in clamp piece 4h for clamping the edge of the drain hole, and the movable frame 14f
The operating cylinder 14i of the clamp piece 14h was attached to '.

Further, as a support member for the damper housings W and b, the eighth
As shown in the diagram, damper housing w3. a workpiece receiver 16b with a locating pin 16a that receives the lower surface of the front end C of the
A third support member 16 consisting of a cla lever 16d that is opened and closed in the vertical direction by a cylinder 16c and presses the front end C from above in the vicinity of the work receiver 16b, and damper mounting holes in the damper housings W and b as shown in FIG. 9. A positioning pin 17d is attached to a movable frame 17c that is moved laterally back and forth along a guide bar 17b by a cylinder 17a so as to fit into the damper mounting hole. One has a built-in clamp piece 17f for clamping the edge of the hole d, and the workpiece receiver 17g receives the lower part of the forming part of the damper mounting hole d.
and a fourth support member 17 consisting of a housing W1. as shown in FIG. A fifth support member 18 includes a work receiver 18a that receives an intermediate portion e of 11
As shown in the figure, there are a workpiece receiver 19a that receives the rear end f of the damper housing W1°, and cylinders 19c that are opened and closed in the vertical direction and sandwich the rear end f from above between the workpiece receiver 19a and the cylinder 19b. The sixth support member 19 configured
and has been established.

Then, as shown in FIG. 12, the side frame W18 is set in the setting jig 7 in a horizontal position with the surface facing outward in the vehicle width direction facing upward in a vertical position, and this side frame W1. is positioned and supported by the first and second support members 14.15, and then the damper housings W, b
, as well as the side frame W, in a vertical position with the side facing outward in the vehicle width direction facing upward, and then attach the second damper housing W, b to this and the side frame W1. 3rd to 6th so that the joint g with
It was positioned and supported by support members 16, 17, 18, and 19.

Further, a locate pin 20 for positioning with respect to the fixing jig 10 is erected on the set jig 7, and a locate pin 20 for positioning the fixing jig 10 is installed.
When the set jig 7 is moved forward to the first assembly station 1 and the setting jig 7 is raised by the X-link mechanism 5a, it fits into the locating hole at the lower end of the locating pin 20 or a docking pin (not shown) hanging vertically on the fixing jig 10. Then, the setting jig 7 is positioned with respect to the fixing jig 10, and in this state, the gripping member 10a provided in the fixing jig 10 is operated, and the side frame W1. Welding guns ll are mounted on the first and second welding robots 1-11.13 with the damper housings W and b positioned and supported on the support members 14...19.
A, 13a performs tack welding at several locations of the joint g, and then, with the clampers of these supporting members 14...19 unclamped, the setting jig 7 is lowered and the setting cart 5 is moved to the setting station la. to return to
On the other hand, the temporarily attached front wheel house W1 held by the fixing jig 10 is welded by the two welding robots 11 and 13 at the joint g.

According to this, the left and right front wheel houses W, ,
W, are assembled in pairs in a horizontal position, and then both front wheels W, , W are paired and delivered to the dispensing jig 8 in a horizontal position, and by the forward movement of the dispensing cart 6. Deliver to transfer station 1b.

Both front wheel houses W, , W, delivered to the transfer station 1b are transported to the second assembly station 2 by the transfer means 21. To explain this in detail, the transfer means 21 is As shown in FIGS. 1, 13, and 14, a motor 23d moves the rack along the rail 22a'I on the guide frame 22 installed in the upper space between the transfer station 1b and the second assembly station 2. An elevating frame 24 that is moved up and down by a cylinder 24a and guide bars 24b and 24b is suspended from a traveling frame 23 that is reciprocated between both stations 1b12 via a pinion mechanism 23b. Pair bracket 2
A pair of left and right transfer jigs 25 and 25, each having a gripping member 25a for gripping the front wheel Novus W1 between them 4c and 24c, are moved to a horizontal position and a vertical position by a cylinder 25c, respectively, about a longitudinal axis 25b. When the traveling frame 23 is moved forward to the transfer station lb, the elevator frame 24 is lowered with the left and right transfer jigs 25 and 25 in a horizontal position. , left and right front wheel houses W, , W, which are held in a horizontal position on the delivery jig 8, are received by the transfer jig 25.25, and then the elevating frame 24 is raised and the traveling frame 23 the second
After moving to the assembly station 2, both transfer jigs 25.
25 to a vertical position, lower the elevator frame 24, and place the left and right front wheels WY and Wl in a vertical position in the vehicle width direction on the front component setting jig 26 arranged at the second assembly station 2. It is now possible to set them in a consistent manner.

The second assembly station 2 has a first setting device 27 for the bulkhead W2 at the rear thereof, and a second setting device 28 for the dash board W3 at the front thereof. The jig 27a provided in the cylinder 2
7b, the bulkhead W2 is set in the jig 27a in a laid down state, and is assembled from the rear to the left and right front wheel houses W, , W on the setting jig 26 by raising the jig 27a. On the other hand, the second setting device 28 attaches a jig 28c for holding the dash board W3 to a cylinder 28d on a slide frame 28b supported by a guide frame 28a on the front side of the second assembly station 2 so as to be movable laterally. The dash board W3, which is set on the jig 28c on the side of the second assembly station 2, is moved forward and backward in the lateral direction of the slide frame 28b and the jig 28c is set on the jig 28c. By moving forward toward the tool 26 side, the left and right front wheel houses W, , W
, so that it can be assembled from the front.

Although not shown, the set jig 26 is provided with a clamp member for positioning and clamping the front wheel house W1, bulk head W2, and dash hood W3, and a welding gun, and as described above, the left and right front wheel houses W1, Wl , bulkhead W2, and dash board W3 are set on the setting jig 26, and then the welding gun provided in the setting jig 26 is used to weld these members W+, W2.
, W3 were tack welded to assemble the front component W.

Note that the setting jig 26 and the first and second setting devices 27.
No. 28 is not particularly different from that described in the above-mentioned Japanese Patent Application Laid-Open No. 1-237082, and detailed explanation thereof will be omitted.

The front component W assembled at the second assembly station 2 is sequentially transported by the transfer device 29 to each of the first to third multiple lighting stations 31.3□, 33, and is placed on the side of each of the multiple lighting stations. Multi-light welding of the front component W is performed by the welding robot 30.

The transfer device 29 includes a transfer bar 29c that is moved back and forth with a stroke equal to the arrangement pitch of the stations on a rail frame 29b that is raised and lowered by an X-link mechanism 29a.
, and five jigs 29d for supporting the front component W are provided on the bar 29c at the same pitch as the arrangement pitch, and the front component W is supported by the forward movement of the transfer bar 29c. , the jig 29d at the rear end moves from the second assembly station 2 to the first additional stroke station 31, and the second jig 2 from the rear (■)
9d] from the first extra-stroke station 3I to the second extra-stroke station 32. The third jig 29d (■) moves from the second extra-stroke station 32 to the third extra-stroke station 36.4
3rd additional hit station 33 with the jig 29d of #■
The workpieces (not shown) are transported from the delivery station 4 to the delivery conveyor (not shown) in front of the delivery station 4 by the jig 29d (5th ■), and are prepared for each station 3, . . . 4 by lowering the rail frame 29b. After delivering the front component W to the receiver, transfer bar 29
c was made to work backwards.

In addition, the jigs 29d of ■ and ■ are transfer bars 29, respectively.
When the transfer bar 29c moves forward, the jig 29d shown in (■) is reversed from the vertical direction to the horizontal direction. The front component W of is transported sideways to the first additional hit station 3, and thereafter it is transported sideways to the second and third additional hit station 32.3.
3, and when the front component W is transported from the third additional stroke station 33 to the payout station 4, the jig 29d (2) is reversed from horizontal to vertical to return the front component W to vertical.

In the processing line of this embodiment, as described above, the front wheel house setting jig 7 includes the side frames W1. and damper housing Wlb are set in a horizontal position, and at the first assembly station 1, side frame W11 and damper housing W1. After tack welding, the left and right front wheel houses w, w', which were tacked, are transferred from the setting jig 7 to the fixing jig 10 and multi-light welding is carried out, and thus the assembled left and right front wheels are assembled. House W+, W+
is delivered to the transfer jig 25.25 of the transfer means 21 in a horizontal position via the dispensing jig 8, and is transported to the second assembly station 2 by the transfer means 21, and the transfer jig 2
5. Left and right front wheel houses W by reversing 25
. .28, assemble the bulkhead W2 and dash board W3 to the front and rear of both front wheel houses W1 and Wl, and temporarily weld these three parts on the setting jig 26 to assemble the front component W. Then, assemble the front component W. ~3rd additional batting station 31.3□, 3
3, the front component W is welded multiple times, and the front component W is delivered from the delivery station 4 to the delivery conveyor.

(Effects of the Invention) As is clear from the above description, according to the present invention, even if the left and right front wheel houses are assembled in a horizontal position in the front wheel house assembly process, both front wheel houses can be moved horizontally by the transfer means. Since the posture is changed from the vertical position to the vertical position and set in the required positional relationship in the front component setting jig, there is no problem in assembling the front component, and in the end the front wheel house is placed in the front wheel house setting jig. It is now possible to set the component parts in a horizontal position, and these parts can be stably supported on the setting jig, improving workpiece setting work efficiency, as well as improving the assembly accuracy of the front wheel house, significantly increasing productivity. It has the effect of making it possible to improve the situation.

[Brief explanation of the drawing]

Fig. 1 is a side view of a front component processing line used to carry out the method of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a front view seen from the arrow ■ in Fig. 1, and Fig. 4 is a front wheel house. Plan views of the setting jig, Figures 5 to 11
12 is a perspective view of the setting jig in the work setting state, FIG. 13 is an enlarged plan view of the transfer means, and FIG. 1 is an enlarged front view of the transfer means seen from arrow XN' in FIG. 1, and FIG. 15 is an exploded perspective view of the front wheel house. W...Front component Wl...Front wheel house W2...Bulkhead Wl...Dash board 7...Front wheel house set jig 21...
・Transfer means 26...Front component setting jig patent Applicant: Honda Motor Co., Ltd. Representative: Kin Kitamura -/Other 3
Name ゛iiom,s Fig. 11/19 1Mc,,/ Fig. 13

Claims (1)

[Claims] A method of assembling the front components of a vehicle body by integrating a pair of left and right front wheel houses, a bulkhead, and a dashboard, in which each member composing the left and right front wheel houses is placed in a horizontal position. The process of assembling the left and right front wheel houses in a horizontal position by welding these parts together and assembling them in a horizontal position, and then moving the assembled left and right front wheel houses using a transfer means. Requires the process of converting from a horizontal position to a vertical position, aligning the vehicle width direction and setting the front component on a setting jig, and installing the bulkhead and dashboard in both front wheel houses on the set jig. A method for assembling front components of a vehicle body, characterized by comprising the steps of: setting them in the positional relationship and welding them together.